Why is edible salt added to the ice cubes in the flake ice machine, and what is the effect

Why is edible salt added to the ice cubes in the flake ice machine, and what is the effect

The following is about the role of adding salt to ice cubes:
Table salt, also known as table salt, is one of the most important substances for human survival, and it is also the most commonly used seasoning in cooking. The main chemical component of salt is sodium chloride, which contains 99% of table salt. Potassium chloride is added to table salt produced in some areas to reduce the content of sodium chloride and reduce the incidence of high blood pressure. At the same time, the table salt in most parts of the world prevents iodine deficiency diseases by adding iodine, and the table salt with added iodine is called iodized salt. Table salt is neutral. Salts containing hydrogen ions are called acid salts, such as: ammonium bicarbonate; sodium bisulfate; potassium dihydrogen phosphate. Salts containing hydroxide ions are called basic salts, such as: basic copper carbonate does not contain Salts of hydroxide ions and hydrogen ions are called normal salts, such as: sodium chloride; sodium carbonate. In addition, there are double salts (such as alum), etc. Some of the salt in saline-alkali land is basic salt, but not all of them are commonly referred to as table salt.
Lower the melting point, that is, water does not freeze at sub-zero temperatures. Frozen brine uses this principle, adding an appropriate amount of calcium chloride can not freeze at -30 degrees Celsius. The effect of adding salt to ice cubes is to accelerate the melting of ice cubes and reduce the freezing of water Ice temperature, when it snows in winter, the traffic police sprinkle salt on the road to speed up the melting of snow and reduce the ice on the road to prevent accidents caused by car skidding, but it does not freeze at -30 degrees Celsius. Salt can lower the freezing point of water and accelerate the dissolution of ice. Without salt, it will dissolve slowly

Flake ice machines have been widely used in aquatic products, food, supermarkets, dairy products, medicine, chemistry, vegetable preservation and transportation, marine fishing and other industries. With the development of society and the continuous improvement of people's production levels, the industries using ice are becoming more and more extensive. The quality requirements for ice are getting higher and higher. The requirements for "high performance", "low failure rate" and "hygiene" of ice machines are becoming more and more urgent.
1. Application in aquatic product processing: flake ice can reduce the temperature of processing medium, cleaning water and aquatic products, prevent bacteria from growing, and keep aquatic products fresh during processing.
2. Application in the processing of meat products: mixing flake ice that meets hygienic standards into meat and stirring. In order to achieve the purpose of cooling and keeping fresh.
3. Application in food processing: For example, when stirring or second creaming in bread production, use flake ice to quickly cool down to prevent fermentation.
4. Application in supermarkets and aquatic product markets: for the freshness preservation of aquatic products such as placement, display, and packaging
5. Application in vegetable processing: flake ice is used in the harvesting and processing of agricultural products and vegetables to reduce the metabolism of agricultural products and the growth rate of bacteria. Extend the shelf life of agricultural products and vegetables.
6. Application in long-distance transportation: Ocean fishing, vegetable transportation and other products that need to be cooled and kept fresh are more and more widely used in long-distance transportation to cool down and keep fresh with flake ice.
7. It is also widely used in laboratories, pharmaceuticals, chemicals, artificial ski resorts and other industries.
8. Application in concrete engineering: When concrete is poured in a large area in hot season, the pouring temperature of concrete must be effectively and reasonably controlled. Flake ice + cold water mixing is the most effective way.